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OSN to FCA: distance & flight time
Osan (Osan Air Base) → Kalispell (Glacier Park International Airport)
5,440 mi
8,754 km · 4,727 nm
11h 8m
estimated nonstop flight time
-15h
time difference · heading northeast
See live OSN→FCA fares Phone-only fares on this route — call free
Flight time details
5,440 miles nonstop takes roughly 11h 8m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- FCA — Glacier Park International Airport · Kalispell, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near OSN
- ICN · Incheon International Airport41 mi away
- SWU · Suwon Airport10 mi away
- SSN · Seoul Air Base (K-16)25 mi away
- GMP · Gimpo International Airport35 mi away
Near FCA
- WPC · Pincher Creek Airport84 mi away
- CTB · Cut Bank International Airport89 mi away
- MSO · Missoula International Airport97 mi away
- YQL · Lethbridge County Airport113 mi away
Frequently asked questions
How far is OSN from FCA?
The flight distance from Osan (OSN) to Kalispell (FCA) is 5,440 miles (8,754 km, 4,727 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to FCA?
A nonstop flight takes about 11h 8m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Osan and Kalispell?
Kalispell is 15 hours behind Osan.
What is the cheapest way to fly from OSN to FCA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–FCA that never appear on search engines, with no booking fees.